Symptoms hopefully TWINS!!

I have been having lots of bloating also as soon as I wake up in the morning. Im only like 2 weeks and 5 days pregnant so I know its very early but this morning I woke up with a bad stomach ache more in my lower area. Boobs are definitely bigger. I have all these faint lines and I started testing on Tuesday. It seems like my lines got darker as the week went on. CB digital is negative still. Im 8 days before af is supposed to show. Do you think my hcg levels are high in order to get a faint line 12 days before missed period. Also I chart everything so I know my exact dates. Any thoughts??